Railway switching apparatus.



No. 887,287. PATENTED MAY 12, 19081 J. D. TAYLOR. RAILWAY SWITCHING APPARATUS.

,APPLIOATION FILED JAN.11.1904. RENEWED MAR..5,18C7

3 SHEBIS-SHEET 1.

No. 887,287. PATENTED MAY 12, 1908.

J. D. TAYLOR RAILWAY SWITCHING APPARATUS.

APPLIGATIION FILED JAN.11. 1904. RENEWED MAR; 5, 1907.

3 SHEETS-SHEET 2,

I WITNESSE p H No. 887,287. PATBNTED MAY 12, 1908. J. 1); TAYLOR. RAILWAY SWITCHING APPARATUS.

APPLICATION FILED T11R11, 1904. RENEWED HA3, 5, 1807.

3 SHEETSSHEET 3.

w A A w m ,1 A

;%ENTOR W! TNES 5 STATES PATET FFIQE.

JOHN D. TAYLOR, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE UNION SWITCH AND SIGNAL COMPANY, OF SWISSVALE, PENNSYLVANIA, A CORPORATION OF PENNSYL- VANIA.

RAILWAY SWITCHING APPARATUS.

Specification of Letters Patent.

Patented May 12, 1908.

Application filed. January 11, 1904, Serial No. 188,424. Renewed March 5, 1907. Serial No. 360,781.

This invention relates to that class ofrailway switching apparatus in which a number of switches, as at a crossing or in a yard, are operated and controlled from a central cabin, the levers controlling the switches being interlocked with one another to prevent conflicting .routcs being set up, and particularly to that class in which electricity is the motive and controlling power.

The objects of my invention are the following: To provide means whereby the movements of the switches shall be always under the complete control of the operator; to secure safe and reliable indications of the positions of the switches, the said indications being the releasing of the correspond ing lever to makeits final movement; to arrange the circuits and apparatus to guard against false movements and false indications from crossed, grounded, or broken wires, and to simplify the apparatus required to accomplish these objects.

In describing this invention reference is to be had to the accompanying drawings ilhlstrating a form of my invention, and in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is an end elevation of the interlocking machine, Fig. 2 is a front view of the same showing two levers assembled side by side. Any number of levers may be thus grouped. 3 1s a plan of two levers of the same. F 1g. 4 1s a plan of the rail switch operating mechanism. Fig. 5 is a diagram of the circuits. Fig. 6 is a section on line X-X of Fig. 1, showing arrangement of brushes 113 and 117 and pins 114 and 116. Fig. 7 is a perspective of part of Fig. 1- showing the arrangement of the parts of the circuit controller operated by the levers; and Fig. 8 is a sectional elevation of the automatic circuit controller operated by the switch movement.

In Figs. 1, 2, 3, 6 and 7, 1 designates a frame for supporting the working parts of a controlling lever, a locking mechanism, an indicating mechanism and a circuit conpin 7 set into t 1e lever 2 and projecting into the slot 103 limits the longitudinal movement of the lever by striking the side of the square boss 5. A coil spring 6 within the slot and pressing against the end of the slot and a side of the boss 5 tends to hold the lever 2 in the position with reference to its longitudinal movement, shown, and will also throw it into that position if it has been withdrawn and released. The pin 7 also serves to retain the spring 6 in position.

The lever 2 is capable of two motions, one a longitudinal motion referred to above, and the other an angular motion around the pivot pin 102. A boss 8 formed on the frame 1 serves to hold it against angular movement when it is held in its normal longitudinal position in either of its extreme angular positions by the spring 6. The lever 2 carries a pin 105, projecting laterally through a slot 104 in a link 3. Thepin105 is provided with a friction roller 106 which fits loosely but neatly in the slot 10 1.

The link 3 is pivoted at 9 to the frame '1 and the slot 104 has a radius of curvature equal to the distance between the centers of the pins 102 and 105 when the lever 2 is drawn out far enough to be free from the lug S. By means of the above named arrange ment of apparatus when the lever 2 is moved in one of its longitudinal directions, an angular movement around the pin 9 is imparted to the link 3-; while the lever 2 is moving through its angular range no motion at all is given to the link, and when the lever is again moved longitudinally, in its opposite angular position, by the spring 6 or otherwise, a further angular movement is given the link 3 on the in 0.

T e lower end of the link 3 is connected by means of the bar 29 to the tappet 30. The first part of the angular movement of the link 3 given to it by pulling out the lever 2 moves the tappet 30 one half way from its normal to its reverse position. I The remainder of the angular movement of the link 3, given to it when the lever 2 is moved to its lower angularlimit and then pushed in longitudinally, moves theta pet to full reversed os tion. The first alf of the movement 0 the tap et 30 locks by means of transverse locking ogs, other levers whose movement, would conflict with the new position of the lever 2, and the last half move ment, of the tappet 30 releases levers whose 10. movements wo d not conflict with the new position of the lever 2, but would conflict with the former osition. The tappets 30, 30, the locking ate 31, and the do 41 are arts of theweil known mechanica interocking machine and need no further description. In plan Fig. 3, the tappet 30 reversed will lock the tappet 30 at normal The arm 4 carries at its u per end two con- 1 tact pieces 34-and' 74, insu ated electrically from the arm 4 and from each other. In the 1 normal position of the lever 2, the contact 34 makes electrical'connection between the brushes 36 and 72, and the contact 74 eleck trically connects brushes 37 and 73. In the reversed position of the lever 2 the con- "tact 34 connects electrically brushes 38 and 75 and the contact 74 connects electrically brushes 39 and 76.. The brushes 36, 37, 72,

and 73 are supported on an insulating block 80 and the brushes 38, 39, 75 and 7 6 are supported on a similar insulatin block 40.

. I Two pins 114 and 116 carried by the lever 2 project-laterally from the said lever and are insulated therefrom but are connected elec- 35 trically to one another by a copper strip or,

- Wire 115. Two brushes 113 and 117 are sup;-. ported on posts 124 and 125 respectively, said osts beingsup orted by the frame 1 but insu ated' electrical y therefrom. The two 0 ,pins and two brushes are so located, that when the lever 2 is in either of its extreme angular positions and in its extreme inward longitudmal position, the pin 114 touches the brush 113 and the pin 116 touches the brush 117 so that electrical connection is made hetween'the two said brushes by the said'pins and the strip 115. In any other position of the lever 2, except those positions closely approximating those above named the-brush 113 is insulated from the brush 117.

The bar 29 has a pin 28 projecting laterally and engaging a slot in a lever 25, the said lever 25 being pivoted at 27 to the frame 1. When the lever 2 is pulled out the angular 6b movement thereby given to the link 3 moves """the bar- 29 longitudinally which in turn swings the lever 25 into a vertical position.

If after this the lever 2 is reversed and pushed in, the, final rotational movement of the link 3, given to it by pushing in the lever 2, acting through the bar 29 swings the lever.

25 to the opposite side of the vertical from which it started. v

14 and 15 designate latches which are piv- 6 'oted at their middle points to the frame 1 and lie in substantially the same vertical plane as the lever 25. The distance between their in ner ends is such as to admit the lever 25 between them when the said lever is in the ver- I tical position. Their outer ends engage with notches 23 and 24 in theheads of armature rods 21 and 22 respectively. Normally these latches lie in such positions as to lock the lever'25 in its vertical position when once it is gaged from'the latch 14 when the armature rod 21 is pushed upwardly due to the armature 19 engaged with it at its lower end being attracted by the magnet 17 when themagnet .17 is ener ized. Similarly the lever 25 is dis o engaged rom the latch 15 by the attraction 1 between the magnet 18 and the armature 20- when the magnet 18 is energized. The ar mature rod 21 is connected by means of a means of the link 13 to the lever 11 pivoted tothe frame 1 at 108. Thelevers 10 and 11 lie in substantially the same vertical plane with the lower end of the arm 4 in such position that the movement of the arm due to the angular movement of the lever 2 depresses thelevers 10 and 11, and through the connecting links 12and 13, ushes the armatures nets, and elevates the inner ends of the latches 14 and 15 into a position to-engage the lever 25. In the normal position of the lever '2 .the arm stands over the lever 11,

and latch 14 are free to move under the influence of the magnet 17. In the freversed position of the lever 2, the lever 10, the latch 14 and the armature 19 are locked by the arm 4, but the lever 11 the latch ,15 and the armature 20 are free to move under the influence of the magnet 18. 1 e

l The armatures19 and20 are'connected rigidl to the same piece of non-magnetic meta 99 which. is pivoted to the frame 1 at a 1 0 point 100 midway, between themagnets 17 and 18. The angle at which the armatures are placed is such that when both rods 21 and 22 are down in their lowest positions they will just touch the armatures 1'9 and 20 re- 5 spectively and the said armatures will be equidistant from the magnets 17 and 18 respectively. When one armature is pulled up by its magnet the rod resting thereon will be a;

e pulled downward without moving itsrod. his arrangement is for the purpose of pre-' venting one armature being pulled up by its own magnet when the opposite magnet is energized the purpose of which will hereafter be seen.

To more fully explain the apparatus I will. describe a complete cycle of movements of the lever 2 from normal to reverse. In Fig.

1 the lever is shown in the -normal position.

put in that position. The lever 25 is disen- 75 link 12 to a lever 10 pivoted to the frame 1 at 3 107, and the armature rod 22 is connected by' 19 and 20 away from t eir respective mag-. 95 I but the lever 10 is free and'the armature 19 pushed upward and the other armature will 1 20 'l them.

to its lower position.

- to its vertical position slides easily over the latch 14 depressing it out of its way, but is locked against any further movement by the latch 15.- This movement of the lever 2 has separated the brushes 113 and 117 electrically by withdrawing the pins 114 and 116 from The next movement of the lever 2 is an angular movement around the pivot 102 By this movement the contact 34 carried by the arm 4 is'moved.

4 into connection with the bnushes 38 and 75,

the contact 74 is made to connect the brushes 39 and 76 and the arm 4 is carried away from the lever 11 and, over the lever 10 thereby depressing the lever 10 and raising the inner end of the latch 14, if not already in that, position, so as to lock the lever 25 against movement to its original position. In this last named position of the lever 2 the spring 6 tends to push it inwardly in a longitudinal direction and exerts a pressure '39 in its middle position.

through the link 3 and bar 29 on the lever 25, causing it to press against the latch 15 which isstill in engagement with it, held by the weight of the parts 11, 13 and 22. The lever 25 being so locked. also locks the tappet It now a current is caused to circulate in the coils of the magnet 18 the armature 20 will be attracted and the latch 15 will thereby be disengaged from the lever 25 and under the influence ot' the spring 6, the lever 2 will be pushed into complete reversed position. This movement will act on the link 3 and, through the bar 29, will push the tappet bar into complete reversed position. At the same time the lever 25 is swung out of the vertical position to aposition inclined to the vertical equal to that shown, but on the opposite side of the vertical.- In this last named position of the lever 2 thebrushes 113 and 11.7 are again elec trically connected. v

The movement from reversed to normal is exactly similar to that just described and. can be readily understood without further description,

In Fig. 4 the parts .4, 45, 46, 47, 48, 49 and 56 and51 are parts ol the well known switch and lock movement which it will not be necessary to describe in detail here. Reciprocal motion is imparted to the bar by means of a reversible electrical motor 42 geared to 'it by any suitable means. I have shown in Fig. 4- a screw as being the means employed for convm'ting the rotary motion of the arn'iature into a longitudinal movement of the bar 45.

An automatic circuit controller for controlling the circuit to the switch operating motor and the indication magnets is theonly part of the apparatus needing special description. As is well known the bar 45 moves longitudinally in one direction to close and lock the rail switch and in the oppositedirectionto open and lock the switch. The circuit controller as shown comprises a bar 54, pivoted arms 55 and 56, contact plates 69 and 70, and brushes 61, 62, 63, 64, 65, 66 and and 67, all contained in a case 58. The bar 54 is connected rigidly to the bar 45 by means of an arm 53, and slides in guides formed in the case 58 as it follows the movements of the bar 45. The bar 54 carries a pin 57 which engages with jaws 109 and 110 formed on the arm 55, near one ol'the extreme positions of said bar and with the jaws 11 1 and 112 formed on the arm 56, near the other extreme position. Brushes 61 and 63 are supported on a block 59. The brushes ,62 and 64 are supported on a block and the brushes 65, 66 and 67 are supported on a block 68. The blocks 59, 60 and 68 are formed of insulating material and are supported by the case 58. The contact plates 69 and 70 are carried by the arms 55 and 56 respectively and are insulated electrically from the said arms.

To describe the operation of the circuit controller I will assume the apparatus as shown in Figs. 4 and S, to be in the. normal position. In this position the contact plate 69 connects the brushes 61 and 63, and the contact plate 70 connects the brushes 66 and 67. Immediately after the movement towards reverse position begins, the pin '57 strikes the jaw 111 pushes it out of its ,path and turns the arm 56 \on'its pivot so as to carry the contact plate 70 away from the brushes 66 and 67 and put it into connection with the brushes 62 and 64. This move ment of the plate 70 is etl'ected before the lock bolt is Withdrawn from the lock rod 49. Near the end of themovement of the bar 54 the pin 57 strikes the jaw 110 and turns the arm 55 on its pivot, which carries the contact plate 69 away from the brushes 6]. and 63 and puts it into connection with the brushes and 67. This movement of the plate 69 is made after the lock bolt hasentered the lock rod 49 and the contact plate 69 is made wide enough so that it connects the brushes 65 and 67 before it leaves the brushes 61 and 63. The movement of the. arm 55 just mentioned carries the jaw 109 into the return path of the pin 57. .lt'will be noticed from the preceding that. during the entire movement except near the beginning and end, the contact plate 69 has connected the brushes 61 and 633, and the contact plate has connected the brushes 62 and 64- and that the brushes 65 and 66 have been disconnected from the brush 67.

In mdving the switch to the normal position the actions oi the parts will be ex actly similar to those above described and 20 tion.

can be readily understood from what has been said in describing the reverse movement. a i I I will now describe the electrical connecf tions between the apparatus in the cabin and .that at the switch and show how the movement of the switch is efiec'ted and indication of its positiongi-ven, reference being made chiefly to Fig. 5. In this 77 is the armature of the switch operating motor, 78 and 79 are field magnet energizing coils, 87 is a batter or othersource of electrical energy and 71 is I the rail switch. The parts are all shown in the. normal :position.

To reverse switch 71 its controlling lever 2 is first pulled out to avoid the lug 8, this movement effecting the locking of other conflicting levers as before described, and then pushed down to its lower angular posi- The latter movement carries the contact 34 away vfrom the brushes 36 and 72 and puts it into connection with the brushes 38 and 75 and carriesthe contact 74 away from the brushes 37 and 73 and puts it into connection with the brushes 39 and 76. In the position of the'lever now being considered the spring 6 tends to push it inwards but it is locked against movement by the latch '15 engaging with the lever 25 as before de- 'scrlbed. The brushes 39 and 76 being joined by the'conta'ct 74 closes a circuit of the battery 87 so that current flows from sald battery through wire 88, fuse 89, wire 90, brush 76, contact 74, brush 39, wires 96,

93, magnet17, Wire 82, brush 63, contact 69,

brush 61, .wire 80, field coil78, armature 7 7,

wires 85 and 86 back to battery. This'current energizes the switch operating motor .and causes its armature to rotate and 40'through theintermediate gearing to move the rail switch. Shortly after the commencement of the movement; the contact 70 is removed from the brushes 66' and 67 and placed so as to connect the brushes 62 and 64 as before described. This does not open or close anelectric circuit with the lever in the reversed position and is onl a preliminary to a movement of theswrtc in the opposite direction and to forming the indication circuitf Near the end of the' movement now being considered, the contact plate 69 is separated from the brushes.

61 and 63 and is put, into connection with the brushes '65 and 67 as before described.

This opens the reverse operating-circuit above described, thereby stopping the flow ofcurrent from the battery through the motor and forms the indication circuit in- H I U tact plate 69 is wide enough to makacontactq' cluding the field c'oils 78 and 79 and the indication magnet 18 so-that the current in- 5 brush 38, wire 84, brush 67, contact 69,

I described.

brush 73; wires 94-, 84,- brush 67, contact 70,

brush65, wire 80to field coil 78, thence to ,the disengagement of the latch 15 and lever 25 and releasesthe lever 2 and tappet 30 to go to full; reverse position as before To throw the rail switch back to nor- .mal position the lever 2 is put into its upper H angular position in which position the com tacts 34 and 74 stand as shown in Fig. 5, This closes-a circuit of the batter .87 so that currentflo'ws from said battery trough wire 88, fuse 89, wires 90, 91, brush 36, contact 34, brush- 72, wires 95, 92, magnet 18, wire 83 brush 64, contact 70, brush 62, Wire 81,

field coil 79, armature '77, wires 85, and 86 p back to battery 87. This operating current flows through the field coil 79 While that-before described for the reverse movement of the switch flowed throu h the field coil 7 8; These currents flow aroun the field; magnets 99 so as to magnetize them oppositely while both flow through the armature 77 in the same direction. The armature therefore r0 I tate's in the opposite direction when the field" coil 79 is energized to that in which it would 5. rotate if the heldcoil 7 8'is energized. The

current in the last named circuit therefore causes the, armature to rotate so as to move the rail switch by means of the intermediate caring, towards the normal position; 7 hortly after the movement commences the contact 69 is moved from the brushes and 67 and put into connection with the brushes 61 and 63 and near the end of the movement the contact 7 O is'moved from the brushes 62' and 64 to the brushes 66 and 67. The move-. ment of the contact breaks the fminndl operating circuit, the last -one described a ove, and closes the indication circuit'ilb eluding the field coils 78 and' 79 arid the in dication'magnet '17, so that the diirrent induced in the said field coils by the decreasing; magnetism flows from field' coil 78 throng wire 80, brush 61, contact 69, brush'63, wlre- 82,-n1agnet 17, wire 93, brush 37, contact 74,

brush 66, wire 8'1,'field coils 79 and 78 tubeginning: This current energizes the magnet 17, causing it to attract thearmatureltl and thereby disengaging the latch '1! froI n -thQ lever'25 which permits the lever 2 andftap t 30 to move into full normalupositionn V It has before been mentioned that co'n-- with'the brushes65 and 67 before leaving the 12s brushes 61 and 63 I The object ofthieistol close the indication circuit before the operating circuit is 0 ened and so permit "the force of the in u'ction to be spentin the 111E:

dication circuit, v It also preventsarcingtc a armature 19 and thus prevent the armature 20 being moved prematurely by a current in the magnet 18 which is the indication magnet for the reverse movement. No current can flow in the magnet 18 in the reverse movement until the proper indication current is generated unless the indication wire 84 should happen to be crossed with the wire 86 or some wire connected to it. If this should happen there would be a shunt around the switch operating motor armature so that current would leave the operating circuit at field coil 78 pass through field coil 79, wire 81, brush 62, contact 70, brush 64, wire 83, magnet 18, wire 92, brush 75, contact 34, brush 38, wire 84, thence through the cross to wire 86 and to battery 87. Sincethe whole current the operating current through the armature 77 and that through the shunt just mentioned passes through the magnet 17 and only the part through the shunt through the magnet 18, the magnet 18 cannot pull the armature away from the magnet 17, and therefore cannot give an indication. Similarly in making the normal movement the operating current goes through the coils of the magnet 18 for the same purpose.

It has been noticed that during the entire movement except a small part near the beginning or end of the movement the contact 69 connects the brushes 61 and 63 and the contact 70 connects the brushes 62 and 64:. By reference to the operating circuits traced above it will be seen that this arrangement makes it possible to change the direction of rotation of the switch motor armature at will.

by merely changing the'position of the corresponding lever 12 at any time in the normal or reverse movement except a small part at the beginning ct each movement {This exception is unimportantsincmthe part of the movement when the motor is not reversible is so small that the lock bolt will not have been withdrawn from the lock rod. In this connection one of the advantages of obtaining the indication current from theinduction of the field magnet over other metlistart and move the s vitch perceptibly thewhich is proper since-if the switch has not ods is that the lever has been moved by mistake and before the armature has tlme to mistakeis discovered and the lever put back an indication will be received and thelevercan be pushed home in its original position,

moved the lever should go home to corre spend with it. Another advantage is that the indication current is always of the same strength no matter whether the armature is running fast or slow.

The object of the circuit closer composed i of the brushes 113, 117, the pins 114, 116, and the strip 115 is the following: As before noted the brushes 113 and 117 are electrically connected when the lever 2 is in complete normal or reverse position. When so connected the brushes and 73 are connected to the common wire 86 through wire 98. For convenience I will assume the coinmon wire 86 to be connected to the negative of the battery. As one terminal of the switch operating motor is permanently connected to,

the common wire the other terminal must be connected to a wire from the positive to cause rotationv Consequently, if current reaches the motor on account of crossed wires the wires crossed must be the next operative wire of the motor in question and a wire from the positive of the battery. In the position of the apparatus shown in Fig. 5 the next ope erative wire for switch 71 is 82. sume that the positively charged wire 83 is crossed with 82 a circuit of battery 87 would be from said battery through wire 88, fuse 89*, wires 90 and'91 brush 36", contact 34?, brush 72*,wires 95 92 magnet 18*, wire 83, the cross, wire 82, magnet 17, wire 93, brush 37, contact 74, brush 73, wires 94, 97, brush 113,.wire 115, brush 117, and-wire 98 back to battery 87. This circuit would be of such low resistance that the fuse 89 would be blown before current that would reach the motor armature7 7 would be effective in moving the switch 71. As all positive wires are provided with fuses at the point of connection with. the positive bus bar the result would be the same should any other wire be crossed with 82. In the reverse position of switch 71 the wire 83 is the next 0 erative and is connected to the negative t rough the magnet 18, wire 92, brush 75,

contact 34, brush 38, wire 97, brush 113, wire 115, brush 117, and wire 98, so that a cross between it and any positive wire would form a short circuit that would blow the f Se in the positive wire crossed with it.

Having thus described my invention I claim as new and desire to secure by Letters Patentother pole of the said source of energy, an

If we asautomatic circuit controller actuated by said mechanism for connecting the non-charged one of said two other conductors to a terminal of said field coil or series of coils at the beginnin of the movement of said mechanism and or disconnecting the charged one of -said two other conductors from the other terminal of the said field coil or series, of coils at the end of the movement of said mechanism, substantially as and for the purpose specified. c

2. In railway switching apparatus, the

combination'of a source of electric energ ly a' eitl switch opera ing motor comprising two coils, suitable mechanism actuated by the said motor for moving and locking the rail switch, a manual controller, an automatic;

controller actuated by said mechanism, a switch operating circuit includin one field coil of the said motor and the sai source of energy, an indication ma net, and an indication circuit including a fie d coil of-said motor and the coil of said indication magnet in which current is caused to circulate by the inductive action of the field magnet of the said motor produced by the coil in the o erating circuit on the said field coil in t e indication circuit, substantially as and for the purpose specified.

3. In railwayswitchingapparatus, the combinationof a source of electric energy, a

' switch'operating motor having one terminal of its armature oined to the middle point of the field winding and the other terminal connected to a pole of the source of energy, suitable mechanism actuated by said motor for .-,moving and locking the rail switch, a manual two position circuit controller for connecting either terminal of said field winding with the other pole of the said source of energy, anindication magnet, and anautomaticcontrolleractuated bysaid mechanism for connecting said indication magnet to and disconnectin said source of energy from said: field Win ing, substantially as and for thepurpose specified. I

4. In railway switching apparatus, the combination with interlocking mechanism'of a switch operating motor comprising two field coils, mechanism actuated by said motor for movin and locking 'the rail switch, a source of e ectrlc ener y, two 0 crating c1rcuits each of which inc udes' a fie d co'ii of the motor, a two osition circuit controller, a

lever susceptib e of an initial movement, a-

medial movement, and afinal movemenn'a latch for holding said lever against final movement, an arm for causing said latch to lock said lever, an indication magnet for disengaging said latch and releasing said lever, an indication circuit including the coil of said magnet and a field .coil of .said switch operating motor wherein current to energize said magnet is generated by the inductive latches to lock said lever, electro magnets eludes the field coil of the action of the field magnet of said mason said field coil, substantially as and for the purpose specified.

5. In railway switching apparatus the combination with int'erlockmg mechanism of a switch operating motor, mechanism actuated b said motor for moving and locking the raii switch, a source of electric energy, an operating circuit including said motor and said source of energy, an ind'cation circuit in which current is caused to ow by the inductive action of the field magnet on the field coil of said motor, an automatic circuit controller actuated by said s'witch operatin mechanism, a lever having initial, media and final movements, a circuit controller actuated by the medial movement of said lever, latches for locking said lever against final movement, an arm for causing said for causing the disengagement of said latches, the said magnets having interlocked armatures and bein alternately one in the said operating circult and the other in said indication circuit, substantially as and for the;

purpose specified.

6. In railway switching apparatus the combination with interlocking mechanism, of a source of electric energy, a motor, switch operating mechanism actuated said motor, electrical connections betweeriflfiaid Tinotor" and said source of energy, a lever having initial, medial and final movements, a latch for locking said lever against final movement,- an .arm to cause said latch to lock said lever, an eleetro-magnet for causing the disenga ement'of said latch, electrical connections etween said magnet and the field coil of said motor, and'a circuit controller actuated by thefinal movement of, said lever for closing the said motor on short circuit substa ntially as and for the purpose s ecified. 7.. In a railway switdhihg apparatus, the combination of a mechanism operated by an electric motor for movm' switch rails, two

circuits and a source of e ectrical supply for said m'o'tor each of which circuits comprise a i field 0011 of the motor and armature thereof,

a lever for controlling said circuit, a lock for said lever comprisin an electro-magnet, and) a circuit for said e ectro-magnet which in motor and not ener zed by current from the source of elec-, trica supply. a

-& In a railway switching apparatus thenot energized from the source of electrical supply, and a circuit controller operated upon a complete movement oft'hc switch rails for opening the circuit on the motor and for ploiing a circuit on the electro-magiiet of the 9. In a railway switching apparatus, the

combination of a mechanism operated by an electric motor for moving switch rails, said motor comprising at least two field coils each of which is in series with the armature oi the motor, circuits and a source of electrical supply for said motor, a manually operated circuit controller for said circuits, a look i' or said manually operated circuit controller comprising electro-magnetic means, and a circuit for 'said electro-magnetic means which includes a field coil of the motor andin which circuit flows current generated by the inductive action of the field magnet of the motor on the said field coil. j

10. In a railway switching apparatus, the combination of a' mechanism operated by an electric motor for moving switch rails, said motor comprising at least two field coils each of which is in series with the armature of the motor, circuits and a source of electrical sup ply for said motor, a manual controller for said circuits which controller when operated closedthe circuit for one of the field coils and armature, a lock for said manual controller comprising electro-magnets, and acircuit for each electro-magnet which includes afield coil of the motor in which circuit current .fiows generated by the inductive action of the field magnet of the motor on the field coil of I the motor.

11. In a railway switching apparatus, the combination of a mechanism operated by an electric motor for moving switch rails, said motor comprising at least two field coils each of which is in series with the armature of the 1 motor, circuits and a source of electrical supply for said motor, a manual controller for said circuit, which controller when operated motor and inclosmg the circuit including an" electro-magnet.

12. In a railway switchin apparatus, the

combination with a source 0 electric energy,

a switch operating motor having at least two field coils each of which is in. series with the armature and one terminal of the armature connected to one pole of the source of energy,

suitable mechanism actuated by said motor for movmg'the switch rails, a manual circuit controller operated by said manual control ler for short-circuiting the motor upon a cross in the wires.

13. In a railway switching apparatus, the combination with an interlocking mechanism, of a source of electric energy a motor v.operated thereby for moving switch rails,

electrical connections between said motor and said source of energy, a lever for controlling said electrical connections, a latch for locking said lever against final movement, an electro-magnet for causing a disengagement'o'f said latch, electrical connections between said magnet and the field coils of said motor, and a circuit controller for short circuiting said motor upon a cross of wires,

14. In a railway switching apparatus, the combination of a source of electric energy, a switch operating motor having at least two field coils each of which is in serieswith the "armature, suitable mechanism actuated by said motor for moving switch rails, a conductor for connecting one pole of the source of electric energy with a coil, two other con ductors, a manual controller for connecting either of said conductors with the other pole of the said source of energy with the motor, and a circuit controller actuated by said mechanism for connecting the nonchargedone of said two other conductors to one:-of said field coils at the beginning of the movement of said mechanism and for disconnecting the charged one*of said two other conductors'from the other terminal ofsaid field coil. or series of coils at the end of the move ment of said mechanism.

' 15. In a railway switching apparatus, the combination with interlocking mechanism of a switch operating motor, mechanism ac-v tuated by said motor for moving switch rails, a source of electricenergy, operating circuits, a circuit controller, a lever susceptn.

ble of initial movement, a (medial) movement, and a final movement, a latch for holding said lever against final movement, an indication magnet for disengaging said latch and releasing said lever, an indication circuit including the coil of said magnet and thefield coil ofsaid switch operating motor wherein current to energize said magnet is generated by the inductive action of the field magnet ofsaid motor on said field coil. 3

16. The combination of a plurality of motor actuated mechanisms for moving switch rails, a plurality of levers for con-j trolling the sup y of power to said mechanisms, each of said levers having a l0ngitudinal movement and an oscillatory movement,"

andmechanical interlocking between said levers which is released and locked by longitudinal movements of the levers.

17. The combination of electric .mptor operative mechanisms for moving switch tions between said supply and c ectric motors of the mechanisms, levers for controlling the rails, a source of electrical su ply, eonnec a longitudinal movement of t connections, and circuit controllers operated by the levers for short circuiting the motors ulp'on a cross of wires between the source of e ectric supply and the motors.

, 18. The combination in an interlocking machine for switches and signals with a plurality of levers each having preliminary and final longitudinal movements andan angular movement between the preliminary and final moved longitudinal movements, of mechanical interlocking operated by the lever during its preliminary and final longitudinal movements.

'19. The combination in an interlocking machine for switches and signals with a plurality of levers each having preliminary and final longitudinal movements and an angular rmxvcment between the preliminary and final I longitudinal movements, of mechanical inter- 24) I 1n an interlocking nai movements, of mechanical interlocking operated by each lever 2 during its preliminaryan'd final longitudinalmovements, and an electric lock for each-lever 2 comprising a lever two latches and electro magnet'ic .means ,tOI' operating themithe arrangement being such is at upon the preliminary t'g dinal movement of a lever longiiatches Whlhi then act to 1prevent further 6 lever 2 until 2 the lever 25 is. to a position to be engaged by the two either of them is moved by its electro-magnetic, means. 7

21 The combination 1n. an. interlocking machine for switches and signals with a plurality of levers 2 "each having preliminary and final longitudinal movements and an angular movement between the two longltudi' nal movements, of a circu1t controller operated by the lever during its angular move I ment, mechanical interlocking operated by each lever 2 during its preliminary and final longitudinal movements, and an electric lock for each lever 2 comprising a lever 25, two latches and electro-magnetic means for operating them the arrangement being such that upon the preliminary longitudinal movement of a lever 2 the lever 25 is' moved to a position to be engaged by the two latches which then act to prevent further. longitudinal movement of the lever. 2 until either of them is moved byits electro-magnetic means.

22. The combination in an interlocking machine for'switches and signals of a plurality of levers '2 each provided with a slot, a pivot for each lever 2-7'located in the slot of dinal and angular movements, a link of an im each lever about which the lever has longituterlocking mechanism associated with each lever, an electric lock for each lever comprising a lever 25 operated by each link, a-pair of latches which act'to hold the lever 25 against movement after its preliminary movement, and an electromagnet for moving each latch its lever2. I Jenn TAYLOR. Witnssesz' 1 i W. M. DANFORTH,

M. Soaen.

to permit further movement of the lever 25 Wit 

